湘潭交流材料volte信令流程

1、VoLTE呼叫信令及eSRVCC切換SIP協(xié)議介紹Kerry2015-08-31SIP協(xié)議培訓(xùn)SIP消息事件分類：發(fā)起會話和響應(yīng)會話: InVIte:會話請求ACK：用于對Invite的賂應(yīng)的確認(rèn) Cancel:用于取消請求（請求完成之前）Bye:正常結(jié)束會話，相當(dāng)于 Register:Options:查詢服務(wù)器能力disconnect響應(yīng)消息事件1XX.-指臨時響應(yīng)，表示已收到請求消息，正在對其進(jìn)行處理2XX:成功消息，相當(dāng)于Ack/Sucs類3XX:重定向，表需要采取進(jìn)一步動作，以完成該請求4:客戶端錯誤，表示請求消息中含語法錯誤或SIP服務(wù)器不能完成對該消息的處理5xx:服務(wù)器端錯誤6x

2、x:全局錯誤，表示請求不能在作何SIP服務(wù)器上實現(xiàn)序號狀態(tài)碼消息功能1xx信息響應(yīng)（呼叫進(jìn)展響應(yīng)）表示已經(jīng)接收到請求消息，正在對其進(jìn)行處理100試呼叫180181呼叫正轉(zhuǎn)182排隊2xx成功響應(yīng)表示請求已經(jīng)被成功接受、處理200OK3xx重定向響應(yīng)表示需要采取進(jìn)一步動作，以完成該請求300多重選擇301遷移302臨時遷移303見其它305使用380代換服務(wù)序號狀態(tài)碼消息功能4xx客戶端出錯,表示請求消息中包含語法錯誤或者SIP服務(wù)器不能完成對該請求消息的處理400錯誤請求401無權(quán)402要求付款403404沒有發(fā)現(xiàn)405不允許的方法406不接受407要求權(quán)408請求超時410413請求實體太大

3、414請求URI太大415不支持的類型416不支持的URI方案420分機無人接聽421要求轉(zhuǎn)機423間隔太短480暫時無人接聽481呼叫腿/事務(wù)不存在482相環(huán)探測483跳頻太高484地址不完整485不清楚486線路忙487終止請求488此處不接受491代處理請求493難以辨認(rèn)5xx服務(wù)器出錯,表示SIP服務(wù)器故障不能完成對正確消息的處理501沒實現(xiàn)的502無效網(wǎng)關(guān)503不提供此服務(wù)504服務(wù)器超時505SIP版本不支持513消息太長6xx,全局故障,表示請求不能在任何SIP服務(wù)器上實現(xiàn)600全忙603604都不存在606不接受IMSUE過程eNodeBMMEIMSSGW/PGWAttach

4、request PreambleRARRRC request RRC setupRRC complete (Attach request)Attach requestAuthentioncation requestAuthentioncation response(NAS) Security(NAS) Securitydd completeInitial UE context request(實際是在建立QCI=9, E-RABID）Securityd (RRC)(RRC) Securityd completeRRC reconfigurationRRC reconfiguration com

5、pleteInitial UE context responseAttach acceptActivate default EPS bearer context (QCI=9)Activate default EPS bearer context AcceptAttach completeIMSUE過程eNodeBIMSMMESGW/PGWPDN connectivity requestCreate sesrequestE-RAB setup request (QCI=5,ERAB-ID)RRC reconfigurationRRC reconfiguration completeE-RAB

6、setup response (QCI=5)Activiate default EPS bearer context request(QCI=5)Activiate default EPS bearer context Accept)IMS_SIP_register request.IMS_SIP_register OK 200此用戶成功后發(fā)起了一次訂閱服務(wù),應(yīng)該是可有可無的IMS_SIP_subscribe (訂閱，與后面的Invite類似，創(chuàng)建一次訂閱關(guān)系）IMS_SIP_subscribe 200IMS_SIP_Notify（告訴訂閱者，其訂閱的資源信息）IMS_SIP_Notify 2

7、00RRC release空閑態(tài)呼叫信令UE(主叫)(被叫) UEMMEeNodeBMMEIMSeNBRequest (IMS_SIP_invite)Service request Preamble過程RRC 過程Initial UE message (request)Initial UE context requestRRC重配RRC重配完成Initial UE Context responserequestTrying 100(臨時回應(yīng)call proceding)E-RAB setup request (QCI=1)RRC重配過程E-RAB setup response (QCI=1)A

8、ctivate dedicated EPS bearer context (QCI=1)Activate dedicated EPS bearer Accept類似Paging的信令Paging(TMSI)Service requestRRC過程 RRC重配XIMS_SIP_invite requestTrying 100 (臨時回應(yīng)call confirm)IMS_SIP_Invite 183(呼叫正在進(jìn)行中)Modify E-RAB request (修改QCI=1相關(guān)參數(shù))RRC重配E-RAB setup request (QCI=1)RRC重配RRC重配完成Modify E-RAB r

9、esponseE-RAB setup response主被叫均為空閑態(tài)的呼叫信令(被叫) UEMMEeNodeBMMEIMSUE(主叫)eNBModify EPS bearer requestModify EPS bearer AcceptActivate dedicated EPS bearer context(QCI=1)Activate dedicated EPS bearer AcceptIMS_SIP_Invite 183(準(zhǔn)備就緒/接受邀請)IMS_SIP_PRACK(對收到183的對方地址進(jìn)行回復(fù)）IMS_SIP_PRACK 200IMS_SIP_Update (更新會話的信息，

10、用于通話建立之前，而通話建立之后的更新用re-invite）IMS_SIP_update 200IMS_SIP_InviteIMS_SIP_InviteRinging 180 (Alerting)OK 200(Connect)IMS_SIP_ACK(ConnectAcknowledge)IMS_SIP_BYE request (disconnect)IMS_SIP_BYE OK 200DeActivate dedicated EPS bearer AcceptModify E-RAB requestRRC重配(去激活QCI1=DeActivate Delicated Bearer reques

11、t)RRC重配完成(去激活A(yù)ccept)Modify E-RAB responseRRC release主被叫均為連接態(tài)呼叫信令(被叫) UEMMEeNodeBMMEIMSUE(主叫)eNBRequest (IMS_SIP_invite)Initial UE message (request)requestTrying 100(call proceding)Modify E-RAB request (QCI=1)RRC重配RRC重配完成Modify E-RAB response (QCI=1)Activate dedicated EPS bearer context (QCI=1) ，帶寬52

12、kbpsActivate dedicated EPS bearer Accept類似Paging的信令I(lǐng)MS_SIP_invite requestTrying 100 (call confirm)IMS_SIP_Invite 183(準(zhǔn)備就緒/接受邀請)Modify E-RAB request (修改QCI=1相關(guān)參數(shù))帶寬49kbps,帶寬49kbps,Modify E-RAB request (QCI=1)RRC重配RRC重配完成RRC重配RRC重配完成Modify E-RAB response)Modify Bearer equestModify E-RAB responseModify

13、 Bearer accept主被叫均為連接態(tài)呼叫信令(被叫) UEMMEeNodeBMMEIMSUE(主叫)eNBActivate dedicated EPS bearer context (QCI=1)Activate dedicated EPS bearerAcceptIMS_SIP_Invite 183(準(zhǔn)備就緒/接受邀請)IMS_SIP_PRACKIMS_SIP_PRACK 200IMS_SIP_UpdateIMS_SIP_update 200IMS_SIP_InviteIMS_SIP_InviteRinging 180(Alerting)OK 200(Connect)IMS_SIP_

14、ACK(ConnectAcknowledge)IMS_SIP_BYE request (disconnect)IMS_SIP_BYE OK 200DeActivate dedicated EPS bearer AcceptModify E-RAB requestRRC重配(去激活QCI1=DeActivate Delicated Bearer request)RRC重配完成(去激活A(yù)ccept)Modify E-RAB responseRRC releaseeSRVCC切換到GSM的信令流程SGWMSCT-BSC/BTSMGWeNodeBUEMMEMeasurement ReportHandover requiredSRVS to CS requestPrepate Handover requestHandover requestactServBasedMobThr=false threshold2GeranQCI(1)Prepare handover request responsethreshold2GeranSRVS to CS responsedHandoverHamand切換到GSM網(wǎng)絡(luò)SRVS to CS complete notificationSRVS to CS complete Acknowledgereleas